O'Reilly logo

The Complete Idiot's Guide® To Photography Essentials by Mark Jenkinson

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 3
Understanding Photographic Exposure

How Exposure Works

The purpose of this book is not to teach you to be a photo lab technician but to give you the basic knowledge and tools to become a better photographer. While I won’t go into great detail about photo processing, it is important to understand the fundamentals of it—which, in turn, will make you a better photographer. So in a nutshell, here’s how exposure works.
In black-and-white photography, the film is coated with a layer of gelatin that contains silver halide particles, which are sensitive to light. We call this the “emulsion” of the film.
As light hits the film, the silver halide particles are excited in direct proportion to the amount of light that hits them.
When the film ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required